High-pressure Fuel Pump
The high-pressure fuel pump raises fuel pressure for direct injection, from a few bar to hundreds or thousands of bar.
What is High-pressure Fuel Pump?
It is usually driven by the camshaft on petrol engines, and by the timing drive on diesels. A control valve sets the pressure. It relies on fuel for lubrication. On petrol engines, a worn cam follower under the pump can damage the camshaft lobe; checking it is part of some service schedules.
How it works
A plunger pumps fuel into the rail; the control valve meters how much.
Why it matters for your car
Wear causes low rail pressure, hard starting and lack of power. Contaminated fuel can destroy it quickly.
Other terms
- Biodiesel (FAME)
- Brake Vacuum Pump
- Chip Tuning (Engine Remapping)
- Fuel Injector Cleaning
- Gearbox Mount (Transmission Mount)
- ISOFIX Child Seat Anchorage
- Kerb Weight (Curb Weight)
- Lane Change Assist
- MPV (People Carrier, Minivan)
- Open Loop (Engine Control Mode)
- Residual Value
- Rocker Arm
- Spark Plug Gap
- Start-stop System
- Towing Mirrors (Extension Mirrors)
- Trafficators (Semaphore Indicators)
- Trolley Jack (Floor Jack)
- Turbo Actuator (Wastegate Or VGT Actuator)
- Tyre Hotel (Tyre Storage Service)
- USB-C Port In The Car